The paper presents the results of a numerical study of the viscous gas flow in a model stage centrifugal compressor with a low-flow coefficient using the Ansys CFX software package. The object of study is a model stage centrifugal compressor with low-flow coefficient, designed and tested at the Department of Compressor, Vacuum and Refrigeration Engineering of St. Petersburg Polytechnic University (hereinafter referred to as the Department of CVRE). To conduct a numerical experiment, a study on grid independence is carried out. The characteristics obtained from the results of a numerical study are compared with experimental characteristics. In the mathematical model of the stage, the magnitude of the axial clearance between the covering disk of the impeller and the compressor housing varies from 1 mm to 5.5 mm and the effect of changes in this value on the characteristic of the loss complex 1 + βfr + βpr is estimated.

Topics
Computer software, Refrigerators, Mathematical modeling, Universities, Flow rate measurement, Engineers
1.
V. V.
 
Neverov
,
Y. V.
 
Kozhukhov
,
A. M.
 
Yablokov
 and
A. A.
 
Lebedev
, “
The experience in application of methods of computational fluid dynamics in correction of the designed flow path of a two-stage compressor
,”
AIP Conference Proceedings
 
2007
,
030048
(
2018
) DOI: 10.1088/1757-899X/232/1/012037.
https://doi.org/10.1063/1.5051909
Google Scholar
Crossref
Search ADS
 
2.
A. M.
 
Danilishin
,
Y. V.
 
Kozhukhov
,
V. V.
 
Neverov
,
K.G.
 
Malev
, and
Y. R
 
Mironov
, “
The task of validation of gas-dynamic characteristics of a multistage centrifugal compressor for a natural gas booster compressor station
”,
AIP Conference Proceedings
,
1876
(
2017
) DOI:
https://doi.org/10.1063/1.4998866
.
Google Scholar
 
3.
A. A.
 
Aksenov
,
A. M.
 
Danilishin
,
Y. V.
 
Kozhukhov
, and
A. M.
 
Simonov
, “
Numerical simulation of gas- dynamic characteristics of the semi-open 3D impellers of the two-element centrifugal compressors stages
”,
AIP Conference Proceedings
 
2007
(
2018
) DOI:
https://doi.org/10.1063/1.5051886
Google Scholar
 
4.
A. A.
 
Aksenov
,
A. M.
 
Danilishin
,
A.M.
 
Dubenko
 and
Y.V.
 
Kozhukov
, “
Development of the virtual experimental bench on the basis of modernized research centrifugal compressor stage test unit with the 3D impeller
,”
IOP Conference Series: Materials Science and Engineering
,
232
(
1
),
012042
(
2017
) DOI:
https://doi.org/10.1088/1757-899X/232/1/012042
.
Google Scholar
Crossref
Search ADS
 
5.
V. V.
 
Neverov
,
Y. V.
 
Kozhukhov
,
A. M.
 
Yablokov
, and
A. A.
Lebedev
. “
Optimization of a centrifugal compressor impeller using CFD: the choice of simulation model parameters
,”
IOP Conf. Ser.: Mater. Sci. Eng.
 
232
 
012037
(
2017
) DOI:
https://doi.org/10.1088/1757-899X/232/1/012037
.
Google Scholar
Crossref
Search ADS
 
6.
A. M.
 
Yablokov
,
I. S.
 
Yanin
,
N.I.
 
Sadovskyi
,
Y. V.
 
Kozhukhov
, and
Minh Hai
 
Nguyen
, “
Numerical characteristics of a centrifugal compressor with a low flow coefficient
,”
E3S Web Conf. Volume 140, 2019 International Scientific Conference on Energy, Environmental and Construction Engineering (EECE-2019
)
https://doi.org/10.1051/e3sconf/201914006010
Crossref
Search ADS
 
7.
K.
 
Kabalyk
, and
W.
 
Kryłłowicz
, “
Numerical modeling of the performance of a centrifugal compressor impeller with low inlet flow coefficient
”
Transactions IFFM
 
131
(
2016
)
97
–
109
Google Scholar
 
8.
A. M.
 
Yablokov
,
I. S.
 
Yanin
,
A. M.
 
Danilishin
, and
A.V.
 
Zuev
, “
Ansys CFX numerical study of stages centrifugal compressor with low-flow rate coefficient
”
MATEC Web of Conferences
 
245
,
09002
(
2018
)
https://doi.org/10.1051/matecconf/201824509002
Google Scholar
Crossref
Search ADS
 
9.
Y. V.
 
Kozhukhov
,
V. K.
 
Yun
,
L. V.
 
Reshetnikova
, and
M. V.
 
Prokopovich
, “
Numerical Investigation of Different Radial Inlet Forms for Centrifugal Compressor and Influence of the Deflectors Number by Means of Computational Fluid Dynamics Methods with Computational Model Validation
,”
IOP Conf. Ser.: Mater. Sci. Eng.
 
90
 
012047
DOI:
https://doi.org/10.1088/1757-899X/90/1/012047
Crossref
Search ADS
 
10.
A. D.
 
Vanyashov
,
T. A.
 
Gurov
,a
S. V.
 
Kononov
, and
D. A.
 
Novoseltsev
, “
Evaluation of the possibility of increasing the natural gas centrifugal blowers pressure by using of stages with axial-radial impellers
,”
Omsk Scientific Bulletin.
 
1
(
30
) (
2005
).
Google Scholar
 
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